Lauda UB 20 - Safety function; Serial interface RS 232 C

LAUDA Ultra-Thermostats
UB 20(-D), UB 25, UB 50, UB 30, UB 40
UB 20 F, UB 20 J, UB 30 J, UB 40 J, UB 65 J
UB 20 JL, UB 30 JL, UB 40 JL
YATE0013 /10.04.02
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9.13 Safety function .................................................................................................................................53
9.13.1 Low-level cut-out.........................................................................................................................53
9.13.2 Adjustable overtemperature limiter .............................................................................................53
9.13.3 Connection potential-free contact "Combined fault" 12 N (Alarm off).........................................55
9.14 Serial interface RS 232 C.................................................................................................................55
9.14.1 Data of the RS 232 C interface...................................................................................................55
9.14.2 General principles .......................................................................................................................56
9.14.3 Output commands.......................................................................................................................56
9.14.4 Requesting data from the thermostat..........................................................................................58
9.14.5 Error messages on the computer ...............................................................................................60
9.15 Timing clock function......................................................................................................................60
9.15.1 Setting and indication of date and time.......................................................................................60
9.15.2 Timing clock function ..................................................................................................................61
9.15.3 Activating the timing clock function.............................................................................................61
10 MAINTENANCE..................................................................................................................... 62
10.1 Safety notes in case of repairs .......................................................................................................62
10.2 Repair and re-initilisation ................................................................................................................62
10.3 Cleaning ............................................................................................................................................63
10.4 Spares ordering................................................................................................................................63
11 ACCESSORIES ..................................................................................................................... 64